U.S. patent application number 17/033870 was filed with the patent office on 2021-05-20 for heating device and coffee machine.
The applicant listed for this patent is TSANN KUEN (ZHANG ZHOU) ENTERPRISE CO., LTD.. Invention is credited to YANXIANG ZHANG.
Application Number | 20210145208 17/033870 |
Document ID | / |
Family ID | 1000005136936 |
Filed Date | 2021-05-20 |
![](/patent/app/20210145208/US20210145208A1-20210520-D00000.png)
![](/patent/app/20210145208/US20210145208A1-20210520-D00001.png)
![](/patent/app/20210145208/US20210145208A1-20210520-D00002.png)
![](/patent/app/20210145208/US20210145208A1-20210520-D00003.png)
![](/patent/app/20210145208/US20210145208A1-20210520-D00004.png)
![](/patent/app/20210145208/US20210145208A1-20210520-D00005.png)
United States Patent
Application |
20210145208 |
Kind Code |
A1 |
ZHANG; YANXIANG |
May 20, 2021 |
HEATING DEVICE AND COFFEE MACHINE
Abstract
The present invention provides a heating device, including a
heating body. The heating body is provided with a fluid inlet, a
fluid outlet and a flow channel, wherein one of the fluid inlet and
the fluid outlet is arranged in an edge area of the heating body,
and the other one of the fluid inlet and the fluid outlet is
arranged in a central area of the heating body. The flow channel is
arranged spirally along a circumferential direction of the heating
body and communicates the fluid inlet with the fluid outlet. The
present invention further provides a coffee machine including the
heating device, and the fluid being heated by the heating device is
water. The heating device and the coffee machine can improve the
stability of the temperature of the outlet water and improve the
taste and quality of the brewed coffee.
Inventors: |
ZHANG; YANXIANG; (Zhangzhou
City, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
TSANN KUEN (ZHANG ZHOU) ENTERPRISE CO., LTD. |
Zhang Zhou City |
|
CN |
|
|
Family ID: |
1000005136936 |
Appl. No.: |
17/033870 |
Filed: |
September 27, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A47J 31/56 20130101;
A47J 2202/00 20130101; A47J 31/542 20130101; F24H 9/0015
20130101 |
International
Class: |
A47J 31/54 20060101
A47J031/54; A47J 31/56 20060101 A47J031/56; F24H 9/00 20060101
F24H009/00 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 15, 2019 |
CN |
201911121584.7 |
Claims
1. A heating device comprising a heating body, the heating body
being provided with a fluid inlet, a fluid outlet and a flow
channel, wherein one of the fluid inlet and the fluid outlet is
arranged in an edge area of the heating body, and the other one of
the fluid inlet and the fluid outlet is arranged in a central area
of the heating body, the flow channel is arranged spirally along a
circumferential direction of the heating body and communicates the
fluid inlet with the fluid outlet.
2. The heating device according to claim 1, wherein an electric
heating tube is provided in the heating body, and the electric
heating tube is arranged along a circumference of the heating
body.
3. The heating device according to claim 2, wherein the electric
heating tube is integrally formed with the heating body.
4. The heating device according to claim 1, wherein the heating
device further comprises a pressing plate and a sealing element,
the sealing element is arranged at an upper opening of the flow
channel to seal and separate adjacent flow channels, the pressing
plate is connected with the heating body to press and fix the
sealing element.
5. The heating device according to claim 4, wherein the sealing
element is provided with a convex structure, the convex structure
is compressed and deformed by the pressing plate and the heating
body to seal the flow channel.
6. The heating device according to claim 1, wherein a side wall of
the fluid outlet is provided with a plurality of grooves, the
plurality of grooves extends along a longitudinal direction of the
heating body and have lateral openings facing a center of the fluid
outlet.
7. The heating device according to claim 6, wherein the plurality
of grooves is arranged continuously along a circumference of the
fluid outlet.
8. The heating device according to claim 1, wherein the fluid inlet
is arranged in the edge area of the heating body, and the fluid
outlet is arranged in the central area of the heating body.
9. The heating device according to claim 1, wherein the heating
device further comprises a temperature detection component, and the
temperature detection component is arranged on the heating body and
corresponds to the position of the fluid outlet.
10. A coffee machine comprising the heating device according to
claim 1, wherein the fluid being heated by the heating device is
water.
11. A coffee machine comprising a heating body, a pressing plate
and a sealing element, the heating body being provided with a fluid
inlet, a fluid outlet and a flow channel, wherein one of the fluid
inlet and the fluid outlet is arranged in an edge area of the
heating body, and the other one of the fluid inlet and the fluid
outlet is arranged in a central area of the heating body, the flow
channel is a spiral groove formed in the heating body and
communicates the fluid inlet with the fluid outlet, the sealing
element is disposed between the heating body and the pressing
plate, the pressing plate is fixed to the heating body so that the
sealing element is sandwiched between the heating body and the
pressing plate to seal an upper opening of the flow channel.
12. The coffee machine according to claim 11, wherein the fluid
inlet is arranged in the edge area of the heating body, and the
fluid outlet is arranged in the central area of the heating
body.
13. The coffee machine according to claim 12, wherein a
circumference of the fluid outlet is provided with a plurality of
grooves, the plurality of grooves extends along a thickness
direction of the heating body and have lateral openings facing a
center of the fluid outlet.
14. The coffee machine according to claim 12, wherein the fluid
inlet is connected with an inlet pipe, and the fluid outlet is
connected with an outlet pipe, so that water enters the flow
channel from the fluid inlet through the inlet pipe, flows to the
fluid outlet along the flow channel, and discharges out of the
heating body through the outlet pipe.
15. The coffee machine according to claim 11, wherein the sealing
element is provided with a convex structure, the convex structure
is compressed and deformed by the pressing plate and the heating
body to seal the flow channel.
16. The coffee machine according to claim 11, wherein an electric
heating tube is provided in a bottom wall of the heating body for
heating the water as the water flows through the flow channel.
17. The coffee machine according to claim 11, further comprising a
temperature detection component arranged on the heating body and
configured for detecting a temperature of the water at the fluid
outlet.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] The present invention is based on and claims the priority of
Chinese patent application No. 201911121584.7, filed on Nov. 15,
2019. The entire disclosure of the above-identified application is
incorporated herein by reference.
TECHNICAL FIELD
[0002] The present invention relates to the technical field of
household appliances, and in particular, to a heating device and a
coffee machine with the heating device.
BACKGROUND OF THE INVENTION
[0003] At present, most coffee machines on the market control the
water temperature by controlling the heating temperature of the
heating device, and then control the temperature of the brewed
coffee, so as to improve the taste and quality of coffee. However,
the structure design of the existing heating device cannot heat the
water evenly, which results in the temperature of the outlet water
being high and low, and the temperature of the coffee is unstable,
which affects the taste and quality of the coffee.
SUMMARY OF THE INVENTION
[0004] In view of the above technical problems, the present
invention provides a heating device and a coffee machine, which can
improve the stability of the temperature of the outlet water.
[0005] In order to solve the above technical problems, the present
invention provides a heating device including a heating body. The
heating body is provided with a fluid inlet, a fluid outlet and a
flow channel, wherein one of the fluid inlet and the fluid outlet
is arranged in an edge area of the heating body, and the other one
of the fluid inlet and the fluid outlet is arranged in a central
area of the heating body. The flow channel is arranged spirally
along a circumferential direction of the heating body and
communicates the fluid inlet with the fluid outlet.
[0006] Further, an electric heating tube is provided in the heating
body, and the electric heating tube is arranged along a
circumference of the heating body.
[0007] Further, the electric heating tube is integrally formed with
the heating body.
[0008] Further, the heating device further includes a pressing
plate and a sealing element. The sealing element is arranged at an
upper opening of the flow channel to seal and separate adjacent
flow channels. The pressing plate is connected with the heating
body to press and fix the sealing element.
[0009] Further, the sealing element is provided with a convex
structure. The convex structure is compressed and deformed by the
pressing plate and the heating body to seal the flow channel.
[0010] Further, a side wall of the fluid outlet is provided with a
plurality of grooves. The plurality of grooves extends along a
longitudinal direction of the heating body and have lateral
openings facing a center of the fluid outlet.
[0011] Further, the plurality of grooves is arranged continuously
along a circumference of the fluid outlet.
[0012] Further, the fluid inlet is arranged in the edge area of the
heating body, and the fluid outlet is arranged in the central area
of the heating body.
[0013] Further, the heating device further includes a temperature
detection component, and the temperature detection component is
arranged on the heating body and corresponds to the position of the
fluid outlet.
[0014] The present invention further provides a coffee machine
which includes the heating device as described above, and the fluid
being heated by the heating device is water.
[0015] The present invention further provides a coffee machine
including a heating body, a pressing plate and a sealing element.
The heating body is provided with a fluid inlet, a fluid outlet and
a flow channel, wherein one of the fluid inlet and the fluid outlet
is arranged in an edge area of the heating body, and the other one
of the fluid inlet and the fluid outlet is arranged in a central
area of the heating body. The flow channel is a spiral groove
formed in the heating body and communicates the fluid inlet with
the fluid outlet. The sealing element is disposed between the
heating body and the pressing plate. The pressing plate is fixed to
the heating body so that the sealing element is sandwiched between
the heating body and the pressing plate to seal an upper opening of
the flow channel.
[0016] Further, the fluid inlet is arranged in the edge area of the
heating body, and the fluid outlet is arranged in the central area
of the heating body.
[0017] Further, a circumference of the fluid outlet is provided
with a plurality of grooves. The plurality of grooves extends along
a thickness direction of the heating body and have lateral openings
facing a center of the fluid outlet.
[0018] Further, the fluid inlet is connected with an inlet pipe,
and the fluid outlet is connected with an outlet pipe, so that
water enters the flow channel from the fluid inlet through the
inlet pipe, flows to the fluid outlet along the flow channel, and
discharges out of the heating body through the outlet pipe.
[0019] Further, the sealing element is provided with a convex
structure. The convex structure is compressed and deformed by the
pressing plate and the heating body to seal the flow channel.
[0020] Further, an electric heating tube is provided in a bottom
wall of the heating body for heating the water as the water flows
through the flow channel.
[0021] Further, the coffee machine further includes a temperature
detection component arranged on the heating body and configured for
detecting a temperature of the water at the fluid outlet.
[0022] As described above, the heating device of the present
invention includes a heating body. The heating body is provided
with a fluid inlet, a fluid outlet and a flow channel, wherein one
of the fluid inlet and the fluid outlet is arranged in an edge area
of the heating body, and the other one of the fluid inlet and the
fluid outlet is arranged in a central area of the heating body. The
flow channel is arranged spirally along a circumferential direction
of the heating body and communicates the fluid inlet with the fluid
outlet. The coffee machine of the present invention includes the
heating device, and the fluid being heated by the heating device is
water. In the heating device of the present invention, since the
fluid inlet and the fluid outlet are respectively arranged in the
edge area and the central area of the heating body, the water
temperature at the fluid inlet can be prevented from affecting the
water temperature at the fluid outlet. At the same time, the fluid
inlet and the fluid outlet are communicated through a spiral flow
channel, which can increase the length of the flow channel, prolong
the residence time of the fluid in the heating body and increase
the heating area, so that the fluid is fast and evenly heated to
the required temperature. When the heating device is used to heat
water, it can improve the stability of the temperature of the
outlet water and improve the taste and quality of the brewed
coffee.
BRIEF DESCRIPTION OF THE DRAWINGS
[0023] FIG. 1 is an exploded schematic view of a heating device
according to an embodiment;
[0024] FIG. 2 is an assembled schematic view of the heating device
in FIG. 1;
[0025] FIG. 3 is another assembled schematic view of the heating
device in FIG. 1;
[0026] FIG. 4 is an exploded schematic view of the heating body in
FIG. 1;
[0027] FIG. 5 is a top plan view of the heating body in FIG. 1;
[0028] FIG. 6 is a cross-sectional view of the heating body along
line I-I in FIG. 5;
[0029] FIG. 7 is a schematic view of the heating body in FIG. 1;
and
[0030] FIG. 8 is an enlarged view of the fluid outlet area of the
heating body in FIG. 7.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0031] In the following, the implementation mode of the present
invention is described by specific embodiments. Persons familiar
with the technology can easily understand other advantages and
effects of the present invention from the contents disclosed in the
specification.
[0032] In the following description, several embodiments of the
present invention are described with reference to the accompanying
drawings. It should be understood that other embodiments may be
used and that changes in mechanical composition, structure,
electricity and operation may be made without departing from the
spirit and scope of the present invention. The following detailed
description should not be considered restrictive, and the scope of
the embodiments of the present invention is limited only by the
claims of the patent. The terms used herein are intended to
describe specific embodiments only and are not intended to limit
the present invention.
[0033] The heating device of this embodiment can be used to heat
water, oil and other fluids. Please refer to FIG. 1, FIG. 2 and
FIG. 3, the heating device of this embodiment includes a pressing
plate 30, a sealing element 20 and a heating body 10. The pressing
plate 30, the sealing element 20 and the heating body 10 are
stacked in sequence as listed and connected through fasteners to
form a whole.
[0034] The heating body 10 is provided with a fluid inlet 11, a
fluid outlet 12 and a flow channel 13. In this embodiment, the
fluid inlet 11 is arranged in the edge area of the heating body 10,
the fluid outlet 12 is arranged in the central area of the heating
body 10, and the flow channel 13 is arranged spirally along the
circumferential direction of the heating body 10 and communicates
the fluid inlet 11 with the fluid outlet 12.
[0035] Specifically, the heating body 10 is in the shape of a disc.
The fluid inlet 11 is higher than the bottom wall of the heating
body 10 and is perpendicular to the bottom wall of the heating body
10. The fluid outlet 12 is a through hole penetrating through the
center of the bottom wall of the heating body 10. The flow channel
13 is a spiral groove formed in the heating body 10 and is located
in the same plane. The fluid inlet 11 is connected with an inlet
pipe 61, and the fluid outlet 12 is connected with an outlet pipe
62, so that the water enters the flow channel 13 of the heating
body 10 from the fluid inlet 11 through the inlet pipe 61, flows to
the fluid outlet 12 along the extension direction of the flow
channel 13, and then discharges out of the heating body 10 through
the outlet pipe 62.
[0036] Because the fluid inlet 11 and fluid outlet 12 are
respectively arranged in the edge area and the central area of the
heating body 10, the distance between them is relatively long,
which can avoid the influence of the fluid temperature of the fluid
inlet 11 on the fluid temperature of the fluid outlet 12.
Meanwhile, the fluid inlet 11 is communicated with the fluid outlet
12 through a spiral flow channel 13, and the length of the flow
channel 13 is relatively long, which can prolong the residence time
of the fluid in the heating body 10 and increase the heating area,
to thereby make the fluid quickly and evenly heated to the
specified temperature and improve the stability of the temperature
of the fluid at the fluid outlet 12. Due to the adoption of the
spiral flow channel 13, the size of the heating body 10 can be
reduced without affecting the heating efficiency, thus achieving
the effect of small volume and fast heating speed.
[0037] It can be understood that in another embodiment, the fluid
outlet 12 may be arranged in the edge area of the heating body 10,
and the fluid inlet 11 is arranged in the central area of the
heating body 10, such an arrangement can also achieve the above
effects.
[0038] The sealing element 20 is arranged at the upper opening of
the flow channel 13, such that the flow channel 13 is sealed and
separated. The pressing plate 30 is connected with the heating body
10 through fasteners, so as to press and fix the sealing element
20. The sealing element 20 is, for example, a silicone rubber. In
this embodiment, the sealing element 20 is provided with a convex
structure 21, which is compressed and deformed by the pressing
plate 30 and the heating body 10 to seal the flow channel 13. In
this way, after the sealing element 20 is fixed, the convex
structure 21 is pressed between the upper surface of the side wall
of the flow channel 13 and the pressing plate 30 to cause a certain
deformation, so as to fully seal and isolate the flow channel 13.
Even if the pressing plate 30 and the heating body 10 may deform
due to relative small displacement during use, the sealing and
isolation of the flow channel 13 can be maintained through the
deformation of the convex structure 21 on the sealing element 20,
so as to avoid the occurrence of cross flow. In practice, the
convex structure 21 can be arranged spirally along the
circumferential direction of the sealing element 20 and is located
corresponding to the side wall of the flow channel 13, that is, the
convex structure 21 is also in a spiral shape. Alternatively, the
convex structure 21 may also be formed into a plurality of rings
with different diameters and are arranged concentrically around the
fluid outlet 12, so long as it can fully seal the flow channel 13
during compression.
[0039] Referring to FIG. 4, FIG. 5 and FIG. 6, an electric heating
tube 15 is provided in the heating body 10. The electric heating
tube 15 is arranged along the circumference of the heating body 10.
The electric heating pipe 15 is controlled to be electrified to
provide the heat source needed by the heating body 10. Since the
electric heating tube 15 is arranged along the circumference of the
heating body 10 and matches with the spiral flow channel 13, the
heating body 10 can be heated uniformly as a whole, so that the
fluid in the flow channel 13 can be quickly and evenly heated to
the specified temperature during flowing. In this embodiment, the
electric heating tube 15 and the heating body 10 are integrally
formed, the heating body 10 defines a receiving cavity 18 on the
back side thereof away from the flow channel 13, and the electric
heating tube 15 is fixed in the receiving cavity 18, so as to form
a whole with the heating body 10. Through integrated molding and
manufacturing, the electric heating tube 15 can be more fully
contacted with the heating body 10, and the heat utilization rate
and heat transfer stability can be improved.
[0040] As shown in FIG. 7 and FIG. 8, the fluid outlet 12
vertically penetrates through the center of the bottom wall 19 of
the heating body 10. In this embodiment, the fluid outlet 12
includes a plurality of grooves 121 which extend along a
longitudinal direction of the heating body 10 and have lateral
openings facing the center of the fluid outlet 12. In other words,
the side wall of the fluid outlet 12 is provided with a plurality
of grooves 121 for the heated fluid to flow through, and these
grooves 121 extend along the thickness direction of the heating
body 10. The arrangement of the grooves 121 increases the area of
the side wall of the fluid outlet 12 and forms a plurality of flow
passages, thus increasing the contact area between the fluid and
the heating body 10, making the fluid more fully contact with the
heating body 10 and heating the fluid more evenly, to further
improve the stability of the temperature of the fluid. In this
embodiment, the plurality of grooves 121 is arranged continuously
along the circumference of the fluid outlet 12, so that the cross
section of the fluid outlet 12 is shaped like a petal, and the
contact area is optimized without affecting the flow rate.
[0041] As shown in FIG. 1 and FIG. 3, the heating device of this
embodiment further includes a temperature detection component 50,
which is arranged on the heating body 10 and corresponds to the
position of the fluid outlet 12, so that the fluid temperature at
the fluid outlet 12 can be detected. For example, the temperature
detection component 50 is an NTC (negative temperature coefficient)
temperature sensor, which is compressed by a spring 51 and fixed on
the heating body 10 by a fixing frame 52. In this embodiment, the
temperature detection component 50 is arranged on the back side of
the installation position 17 shown in FIG. 5, so as to be close to
the fluid outlet 12 and not directly contact with the fluid, which
is convenient for maintenance and can detect the fluid temperature
at the fluid outlet 12 accurately.
[0042] As mentioned above, in the heating device of the present
invention, since the fluid inlet and the fluid outlet are
respectively arranged in the edge area and the central area of the
heating body, the water temperature at the fluid inlet can be
prevented from affecting the water temperature at the fluid outlet.
At the same time, the fluid inlet and the fluid outlet are
communicated through a spiral flow channel, which can increase the
length of the flow channel, prolong the residence time of the fluid
in the heating body, and make the fluid be heated more uniformly,
thereby improving the stability of the temperature of the fluid at
the fluid outlet.
[0043] The present invention further provides a coffee machine,
which includes the heating device as described above, and the fluid
being heated by the heating device is water. When the coffee
machine operates, the electric heating tube 15 of the heating
device is controlled to preheat the heating body 10 to a preset
temperature, and then the water is pumped through a water pump so
that the water enters the flow channel 13 in the heating body 10
through the fluid inlet 11 of the heating body 10, and then flows
along the spiral flow channel 13 to the fluid outlet 12. In this
process, the heating body 10 heats the water to the temperature of
making coffee. Since the flow channel 13 is relatively long and the
fluid outlet 12 is provided with the grooves 121, the water is
fully and evenly heated in the heating body 10 and quickly reaches
the required temperature, and the temperature of the water flowing
out from the fluid outlet 12 is stable, such that the coffee
temperature is stable, the taste and quality of the brewed coffee
is improved, and the user experience is enhanced.
[0044] The above-mentioned embodiment only illustrates the
principle and the effects of the present invention, and is not used
to limit the present invention. Any person familiar with the
technology may modify or change the above-mentioned embodiment
without departing from the spirit and scope of this invention.
Therefore, all equivalent modifications or changes made by a person
with ordinary knowledge in the technical field without departing
from the spirit and technical ideas disclosed in the present
invention shall still be covered by the claims of the present
invention.
* * * * *